# [Returning Adventurer] Accumulated 12 Hrs of Playtime!!

**Challenge ID**: 3713

## Challenge Text

Event Period: Feb 23, 2022 (after maintenance) - Mar 16, 2022 (before maintenance)
 Returning Adventurers who play for 12 hours will get Sealed Book of Combat (1 Day) x1 and Sharp Black Crystal Shard x3.

Reward whitelist rows are not mapped per challenge yet, so this page does not claim reward contents.